57.14115—Stationary grinding machines.
Stationary grinding machines, other than special bit grinders, shall be equipped with—
(a)
Peripheral hoods capable of withstanding the force of a bursting wheel and enclosing not less than 270°—of the periphery of the wheel;
(b)
Adjustable tool rests set so that the distance between the grinding surface of the wheel and the tool rest is not greater than 1/8 inch; and